Switch.



' SWITCH.

APPLICATION FILED MAY 9, 1901.

1516111611 Jiily 4, 1911.

2 sums-gum 1.

I l VENTOR 0. E. CARPENTER.

- SWITCH.

I AAAAAAAAAAAAAAAAAAAAAAAA '1. 996,973. Patented July 4, 1911.

2 sums-sum 2.

1 Warren STATES PATENT OFFICE.

mums n. cnnrnnum, or nnwronx, N. Y., ASSIGNOR. TO THE corms-Human km.00., OIIILWAUKEE, wrscoxsm; A eonronsrron or wrsconsm.

SWITCH.

Specification of Letters Patent.

Application filed Kay 9, 1907. Serial No. 372,735.

Patented July at, 1911.

To all whom it may concern.

Be it known that I, CHARLES E. CARPEN- m, a citizen of the UnitedStates, residmg at New York city, in the county of New York and State ofNew York, have invented new and useful Improvements in Switches, ofwhich the following is a full, clear, conci'se, and exact description,reference being bad to the accompanying drawing, forming a art of thisspecificatlon.

y invention relates to improvements in switches" and particularly 7 toelectro-magv netically operating switches.

One of the objects of-my invention is t construct a switch having adouble break and means for disrupting the are formed upon the opening ofthe switch.

Another object of my invention is to provide a blowout magnet soarrapged as to use the iron of thearmature of he magnetoperating theswitch to form a portion of the magnetic circuit of the blowout coil.

Still anotherobjeet of my invention is to provide a magnetic blowout fordisrupting the are formed by the opening of a switch, at both points ofinterruption of the circuit.

I have illustrated in the accompanying drawings one embodiment of myinvention, and said drawings:

Fi re 1' isan elevation of a solenoid switc embodying my invention. Fig.2 is a diagrammatic view of the circuit arrangement illustrated 'in Fig.1, and Fig. 3 is a sectional view on the line 3-3 of Fig. 1.

In the embodiment of the invention illustrated in the drawings, upon asuitable base or panel 2, preferably formed of slate or like insulatingmaterial, are mounted the various parts of the switch. The main switchcomprises a pair of brushes 3 formed of l'aminatlons or leaves of coppersuitably sup tied in a cup 4, carried by a tail rod .5. e cup issupported upon the tail rod by means of nuts 6 and 7 between which it isclamped. The brushes 3 are arranged to engage and make contact with apair of stationary contacts 8 and 9, suitably supported The upper uponthe face of the panel 2. end of the tail rod 5 carries a disk 10, whichis supported upon a coiled spring 11 held in position by a collar 12.The disk 10 forms an auxi iary contact arranged to close the circuitacross the pair of stationary contacts 13 and 14. When in open position,the

.circuit independent of the load circuit, such,

for example as applying a dynamic brake to a motor after disconnectingthe motor from the line,or they may be usedas contacts for closing anyother circuit as may be desired by the user.

For operating the switch, I provide a solenoid 18, the core 17 of whichis connected with the tail rod 5, whereby as the core is raised, theswitch members 10 and 3 will be closed. The upper end of the core of thesolenoid is provlded with a non-magnetic screw threaded projection 19,carrying an adjustable collar 20 having a projection arranged to open aswitch 21 pivoted at 22 and engaging a stationary contact 23.

For disrupting the are formed when the disk 10 o ens the circuit at thecontacts 13 and 14, T provide a blowout magnet 24, which is mounted uponthe rear of the anel or base 2, and is provided with a po e 25, havingbifurcations 26 formed on the lower end. Each bifurcation is providedwith an angular extension. 27, which projects throu h an opening in thebase 2, and a slight distance beyond the face of the base, forming polepieces 28, arranged upon either side of the stationary contacts 18 and14. The oppositepole of the magnet 24; is secured in position by a bolt29 which extends throu h the base and into the iron frame 30 of tiesolenoid 18. By this arrangement, the magnetic circuit of the blowoutcoil extends from the pole pieces 28, to the plunger 17 of the solenoid18, through the bolt 29, and back to the pole In order to assist incollecting the lines of force for the plunger 17 the magnetic gapbetween the plungerand the pole pieces 15 reduced by iron washers 17*disposed above and below the disk 10. It will be noted that the lines offorce passing from the pole pieces 28 to the core or plunger 17interrupt the are, formed by the disk 10 leaving the contacts 13 and 14,at right angles and thereby efliectnally disrupt the same.

The binding posts 31, 32 and 33 of the switch are connected respectivelywith a corn ductor 34, leading to a switch 35, a conductor 36, leadingto one side of the line, and a conductor 37 leading to one terminal ofthe load. The opposite terminal of the load is connected with theopposite side of the line 38, and one side of the switch 35 is connectedwith the line 38, by conductor 39.

The binding,' post 31 is also connected by conductor l0 with the switch21, and the contact 23 of said switch is connected by conductor llv withone terminal of the solenoid 18, the opposite terminal of which isconnected by conductor 42, with the contact 8 and by a short conductorl3, with the contact 123. lnterposcd between the switch 31 and thecontact 23 thereof, is a resistance ll arranged to be inserted in serieswith the solenoid 18 upon the opening of the switch 21. The binding post32 is connected by conductor 45, with the contact 8, while the contact 9is connected by conductor to with the binding post 33. The contact 9 isalso connected by conductor l? with one terminal of the winding l8 ofthe blowout magnet. 24, the opposite terminal of which is connccted byconductor l9 with the contact 14.

In operation as soon as the switch 35 is closed, circuit will beestablished from the positive side'ifiti of the line by conductors 45and t), through the winding of the solenoid 18, thence by conductor ell,across the switch 21, by conductors l0 and 3%, across the switch 35, andby conductor 39, to the negative side of the line. This energizes thesolenoid 1S and the same attracts its core, raising the tail rod 5 andcausing the disk 10 to engage the stationary contacts 13 and 14. Thespring, ll supporting the disk 10 will permit the tail rod to continueto rise until the brushes 3 engage their stationary contacts 8 and 9closing the circuit from the positive side of the line, by conductors 36and 4:5, across the brushes 3, and by con-- ductors 46 and 37, to thelead. lVhen the core moves to the limit or". its upward travel thecollar 20 engages the switch 91 opening the same and inserting theresistance ell in series with the winding of the solenoid 18 to preventsaid solenoid from. ovtnf-hcating. The winding -18 of the blowout coilbeing in shunt with the contacts 8 and i) no current will flow throughthe winding as long as the main switch is closed. In event the switch 35is opened the solenoid will immediately be detincrgi'lced permitting thetail rod 5 to drop, which carries with it the brushes 3 and the diskit). The brushes 3, however, will disengage from their stationarycontacts 8 and 9 before the disk 10 and circuit will be establishedmomentarily through the winding 48 and, as the disk 10 discugages itscontacts 13 and i l, the blowout magnet will disrupt the are formed atthis point. It will be seen that a very short interval elapscs betweenthe opening of the main switch 3 and the auxiliary switch 10 and it istherefore possible to use a coinparatively small winding for thispurpose.

' Having thus described my invention what I claim as new and dcsiretosecure. by Letters Patent is:

l. The combination with a switch, of an electroanagnet for operating thesame, a

blowout magnet for disrupting the arc formed on the opening o1 saidswitch and having a part of the magnetic circuitthereof formed by thearmature of said electron'iagnet.

2. The combination with a switch having a main and an auxiliary contactmember, of an clectro-magnet for operating said menu bers, and a blowoutmagnet for disrupting the are lormcd by the opening of said auxiliaryswitch having a part of its n'iagnetic circuit formed by the armature ofsaid electro-magnet.

3. The combination with a base, of a movable member carrying a mainswitch and an auxiliary switch, mounted on said base, anelectroanagnetfor operating said movable member also mounted on saidbase, and a. blowout magnet mounted upon the rear oi. said base andhaving a bifurcated pole piece projecting through said base in proximityto said auxiliary switch for disrupting the are formed upon the opening01: said switch.

4. 111 an electric switch, in combination, a longitudinally slidingmember, a main contact carried thereby, an auxiliary contact resilientlysupported on said member and adapted to be closed before and openedafter said main contact, and a blowout magnet for disrupting the areformed upon the opening of said auxiliary switch, part of the magneticcircuit of said blowout being through said movable men'iber.

5. In an electric switch, in combination, a solenoid, a plungertherefor, a main switch contact carried by said plunger, and anauxiliary switch resiliently supported upon said plunger, said auxiliaryswitch beingadapted to close before and open al'ter said main contact,and a blowout magnet for dis rupting the are formed upon the opening ofsaid. auxiliary switch, part of the magnetic circuit of said blowoutmagnet being formed by said plunger.

6. In an electric switch, in conibination, a solenoid, a plungertherefor, a main switch contact carried by said plunger, and anauxiliaryswitch resiliently supported upon said plunger, said auxiliary switchbeing adapted to close before and open after said main contact, and ablowout magnet for disrupting" the are formed upon the opening of saidauxiliary switch, part of the magnetic circuit of said blowout magnetbeing formed by said plunger, said magnethaviug a bifurcated pole piecedisposed in proximity to said auxiliary switch.

7. In an electric switch, in combination, a solenoid, a verticallymovable phmger,.a laminated main switch mounted thereon, an

ooaova greater than the distance between said disk and its stationarycontacts, and a blowout magnet, part of the magnetic circuit of saidblowout bein through said plunger.

8. The com1ination with a base, of a movable member, mounted thereoncarrying a mainfswitch and an auxiliary switch, an electro-magnetforoperating said movable member also mounted on said base, and ablowout magnet mounted upon the rear of said base and having pole piecesextending vthrough openings in said base in proximity to said auxiliaryswitch for disrupting the are: formed by the opening of said switch,said blowout ma net having a part of its ma etic circuit Eormed by thearmature ot' sai electro-magnetf- 9. The combination with a movablemember, of a main switch carried by said movsaid main switch, an

able member, 'stationar contacts engaged by an auxiliary switch looselymounted on said movable member. a spring adapted to resiliently supportsaid auxiliary swltch on saidmovable member, stationary contacts engagedby said auxiliary switch, the distance between the auxiliary switchcontacts and their cooperating member being less than the distancebetween the main switch contacts and their cooperatingmember, wherebythe auxiliary switch will be closed before and open after the mainswitch,an electro-magnet for operating said movable member and a blowoutmagnet for disrupting the are formed upon the opening of said auxiliary,switch contacts, the circuit of said eletro-magnet being controlled bysaid auxiliary switch.

10. The, combination with a movable member, of a main switch membercarried thereby, stationary contacts arranged to be I engaged by saidmain switch member, an"

auxiliary switch memberresiliently carried by said movable member,stationary contacts arranged to be engaged by said auxiliary switchmember and disposed at a less distance from their cooperating switchmemher than the contacts of the main switchmember, an electro-magnet foroperating said movable member, and a blowout magnet for disrupting theare formed by the opening of said auxiliary switch, said mag magneticcircuit thereofpieces arranged in proximity of said switch fordisrupting the are upon the opening of the same, said blowout magnethaving a por after said main switch, and a blowout magnet for disruptingthe are formed on the opening of said switch having a part of thei'ormed by the plunger of said solenoid.

13.,In combination with a solenoid haviri a movable plunger, of avertical movab e rod carried by said plunger, a main switch contactcarried by said rod, an auxiliary switch resiliently mounted thereon, aspring disposed on said rod and bearing against said auxiliary switch,said auxiliary switch having a shorter distance to move to engage itscontacts than the main switch, said spring being adapted to maintain theauxiliary switch closed after the main switch opens, and a blowoutmagnet having pole pieces ad'acent to said auxiliary switch, thecircuit'o said blow-out magnet being controlled by'sai'd auxiliaryswitch. 14. The combination with a base, of a movable member mounted onsaid base, a switch carried by said movable member, and

8' blOW-jlOl1t magnet mounted upon the rear ofsaid'base and having abifurcated pole piece projecting through said base in proximity to saidswitch.

15. The combination with a base, of a movable member mounted thereon, amain switch and an' auxiliary switch carried by said movable member, anda blow-out magnet mounted upon the rear ofsaid base, and having abifurcated pole piece projecting through said base in proximity to saidauxiliary switch, part of the magnetic-circuit of said {blow-out magnetbeing formed by said mo able member.

16. Iii an electric switch, in combination,

a solenoid, a plunger therefor, a frame having portions coatiguous tosaid plunger, a main contact carried by said plunger, an auxiliarycontact resiliently sup orted on said plunger adapted to be clOSeCbefore and opened after said main contact, and a blowbut-"magnet fordisrupting the are formed upon the opening of said auxiliary contact,part ofthe magnetic circuit being through said frame and plunger.

17. In an electric switch,in combination,

a solenoid, a plunger therefor, a frame hav ing portions contiguous tosaid plunger, 1 main contact carried by said plunger, an

auxiliary contact resiliently supported upon said plunger adapted to beclosed before and opened after said main contact, and ablowout magnethaving a bifurcated po pies-a disposed in proximity to said zzuxiliai'ycon-- tact.

18 In an electric switch, in combination, a solenoid, a plungertherefor, 21- frame hm ing portions conti uous to said plunger 2. mainContact Carried by said plunger an auxiliary Contact resilientlysuppoi'lcd upon said plunger adapted to be closed before and openedafter Silltl main COHtiICt 21ml :1 lJlO-\\'- out magnet having'abifui'calecl pole picca i 050d in proximity to 5321 rxuxilimv coni. mrt0i the inis neuc CHCUIl; 01- said A 1;) -v olowoula nm net b81133?Lurousrli we solenoid F o v plunger aim 11111119.

in witnc-iaus whereof i have hereunto subu a v 4 SCIfllJGd my nrimc inthe presence of two witnei-

